Oil filler



March 18, 1930. M. CARIPEINTIER OIL FILLER Filed Dec. 9, 1927 INVENTOR m N mm M L M W 0 D m A TTORNEY STATES MELBOURNE .L. GARPENTIER, OF DETROIT,

MICHIGAN, ASSIG-NOR T CHRYSLER COR- PORATION, OF DETROIT, MICHIGAN, A CORPORATION OF DELAWARE OIL FILLER Application filed December 9, 1927. Serial No. 238,774.

This invention relates to an oil filler or breather for the crankcase of an internal combustion engine.

In ventilating the crankcase of an internal combustion engine it is desirable-to admit air into the crankcase thru the oil filler thru which lubricant is supplied to the crankcase. It is important to provide a means for varying the amount of air admitted thru the filler 1c and to provide a cover therefor to keep out dirt.

An important object of the invention is to provide a cover for the filler which may be adjusted to Vary the amount of air admitted i5 theret-hru without admitting dirt.

Another object of the invention is to form the adjusting means on the cover so that the entire structure may belremoved as a unit Without disturbing the adjusmtent when the cover is removed for filling the crank case I g '38, removing the vapors-above referred to.

with lubricant. v

Other objects and advantages will more fully appear from the following description taken in connection with the accompanying drawings in which: I

Fig. 1 is a vertical sectional view thru an internal combustion engine showing I an adaptation of my invention.

Fig. 2 is a view partly in section and partly in elevation thru the filler pipe andcover.

Fig. 3 is a sectional view taken on line 33 of Fig. 2. p

Fig. 4 is a sectional view taken on linel44 of Fig. .3. 4 Referring to the drawings, an internal combustion engine having a cylinder head 10, cylinder block 12, and oil pan 14, has been selected for illustrating one embodiment of my invention. The usual crankshaft 16, connecting rods 18, pistons 20, camshaft 22 and valve mechanism 24 have been shown adapted to operate in the usual manner. The, lower portion of the cylinder block 12 and the oil pan 14 form a chamber 26 commonly called the crankcase in which the crankshaft rotates. The blow by gases which pass from the combustion chamber 30 by the pistons 20, contain unburnt gasoline and water vapors. The difierence in temperature between the vapors and the comparatively cool crankcase wall causes condensation of water and gasoline vapors, which, if not removed before they gondense, dilute the lubricant in the chamer. I

Mounted on the side of the crankcase is an .oil filler 34 thru which air is admitted to .the chamber 26. At the rear end of the motor and above the crankcase is a conduit 36 communicating with the valve tappet chamber 38 which is in communication with the chamber 26. The conduit 36'is directed rearwardly and downwardly so that when the engine is in forward motion a suctionis produced through it which acts on the chambers 26 and 38. Considerable pressure is formed under the hood of an automobile due to the action of the cooling fan, not shown, and this pressure extends thru the filler pipe and, together with the suction in the conduit 36, causes a circulation of air thru-the chambers '26 and .The filler-pipe is open at both ends, one end being received in the side of the crankcase and itsouter open end is adapted to receive a cover. The cover comprises three main members; a split tubular member 42, an annular sleeve 44, and a cap member 46. The split tubular member 42 fits the inner periphery of the tubular filler pipe 34 and its outer edge is provided with tongues 48 which extend thru openings in the cap member 46.

The tongues are adapted to be bent over to hold the capand split tubular member inan assembled relation. The member 42 is shown split as at 50 to permit circumferential eX- pansion to frictionally fit the inner periphery of the filler pipe. A plurality of spaced openings 52 are formed in the wall ofthe member 42 and the annular sleeve 44 frictionally engaging the outer periphery of that portion of the member 42is also provided with correspondingly spaced openings '54 which are adapted to register with the openings 52' when in one angular position. When the sleeve 44 is in another angular position the spaces between the openings 54 close the openings 52. An inwardly turned tongue 56 on the sleeve 44 is received in a slot 58 at the upper edge of the tubular member 42 which limits the angular movement of the sleeve and also determines the axial position of the sleeve on the split tubular member 42.

The lower edge of the sleeve is turned radially outward forming a shoulder which supports the assembled cover on the upper edge of the filler pipe 34. Integral with the shoulder 60 are a plurality of angularly disposed fins 62 which tend to separate the dirt from the air drawn into the filler pipe. The cap is extended beyond the tubular members and downwardly over the fins 62, thus directing the air upwardly past the fins 62, thru the openings 52 and 54, when they are in registered position, and into the crankcase chamber 26. The cover may be removed as a unit without changing the adjustment of the openings.

The sleeve 44 may be assembled on the split tubular member 42 before the cap 46 is secured thereon or it may he slid from the opposite end after the cap is in position. By the latter method the tongue 56 is guided upwardly thru the split 50.

While one particular adaptation of my invention has been illustrated and described in detail, it is to be understood that various changes including size and arrangement of parts may be made without departing from the spirit of my invention and it is not my intention to limit itsscope other than by the terms of the appended claims.

hat I claim is:

1. A filler pipe cover of the class described comprising a split tubular portion having a plurality of openings in the wall thereof at its outer end, a cap secured to said tubular portion closing the outer opening of said tubular portion and extended outwardly and downwardly over said openings, the outer edge of said cap being spaced from the outer periphery of said tubular portion, a sleeve having a plurality of openings in tie wall thereof adapted for angular movement around said tubular portion, and a plurality of angularly disposed fins between said cap and the outer periphery of said tubular portion.

2. A filler pipecover of the class described comprising a tubular member adapted to frictionally engage the inner wall of a filler pipe and having openings in the wall thereof at its outer end, a cap secured to said tubular member closing its outer opening, and an angularly movable sleeve having openings in the wall thereof adapted to register with the openings in said tubular member, said sleeve positioned between said cap and the upper edge of said filler pipe forming a stop for the inward movement of said cover.

3. A filler pipe cover of the class described comprising a tubular member adapted for frictional engagement with the wall of a filler pipe and having openings in the wall thereof beyond the upper edge of said filler pipe, means carried by said tubular member portion,

for opening and closing said openings, means for positioning said means axially on said tubular member, and a cap secured to said tubular member closing its outer end and having a downwardly projecting flange spaced from the outer periphery of said tubular member.

4. A cover of the class described comprising a split tubular member adapted for frictional engagement with the inner periphery of a tubular support and having openings in the wall thereof beyond the upper edge of said tubular support; an angular movable sleeve having openings in the wall thereof around said tubular member adapted for opening and closing the openings in said tubular member, means carried by said sleeve for axially positioning it on said tubular member and forming a stop for limiting the angular movement of said sleeve, a cap secured to said tubular member closing its outer end and having a downwardly projecting flange spaced from the outer periphery of said tubular member, andangularly disposed fins between said cap and the outer periphery of said tubular member integral with said sleeve and below said openings.

5. A filler pipe cover of the class described comprising a filler pipe open at its upper end, a member having a portion adapted for frictional engagement with the periphery of said filler pipe, a tubular end portion at the upper end of said member and provided with openings, a cap for closing the upper tubular end and a sleeve having openings therein in frictional engagement with the periphe y of said tubular portion, said sleeve being positioned axially between said cap and the upperedge of said filler pipe.

6. A filler pipe cover of the class described comprising a filler pipe open at its upper end, a member having a portion. adapted for frictional engagement with the periphery of said tiller pipe, a tubular end portion at the upper end of said member and provided with openings, a cap for closing the upper tubular end portion extending outwardly and downwardly over said openings and spaced therefrom, a sleeve having openings therein in frictional engagement with the periphery of said tubular portion, said sleeve being positioned axially between said cap and the upper edge of said filler pipe, and a plurality of angularly disposed fins between the downwardly projecting portion of said cap and said member.

MELBOURNE L. CARPENTIER. 

